The S1 Continental of 1955 featured the last of Bentley’s long-lived six-cylinder engine, which, being a Rolls-Royce design, was smooth and silent but also appropriately powerful. Road test figures published in Autocar recorded a top speed of 120.5 mph. An exceptionally rigid welded box section chassis was mounted on a new front suspension that had a semi-trailing wishbone and repositioned rear springs, which improved handling and softened the ride, while a three-way safety braking setup enabled sure stops at the end of those high-speed journeys. The rear suspension was electrically controlled, and it could be changed to normal or hard by a switch on the steering column.